HomeSS 1Information TechnologyDefinition, Types, and Usage of Output Devices Information Technology SS1

Definition, Types, and Usage of Output Devices Information Technology SS1

Subject: Information Technology
Class: SS1
Term: First Term
Week: 5
Age: 14-16 years
Topic: Output Devices
Sub-topic: Definition, Types, and Usage of Output Devices
Duration: 80 minutes

Behavioral Objectives

By the end of the lesson, students should be able to:

  1. Define and explain the term output devices.
  2. List examples of common output devices.
  3. Classify printers into impact and non-impact printers, and compare the two.
  4. Differentiate between a printer and a monitor based on their functions.

Keywords

  • Output Device
  • Printer
  • Monitor
  • Impact Printer
  • Non-Impact Printer

Set Induction

Begin the lesson by showing images of a printer and a monitor. Ask students to identify which one is used to display information and which one is used to print documents. Discuss their experiences using both devices.

Entry Behavior

Students may have used printers and monitors, but they may not know the different types of printers or the specific functions of output devices.

Learning Resources and Materials

  1. Real examples of output devices (e.g., monitor, printer).
  2. Projector for showing images of various output devices.
  3. Digital presentation on types of output devices.

Building Background/Connection to Prior Knowledge

Relate output devices to smartphones and other devices students use, where output is shown on screens or printed on paper.

Embedded Core Skills

  • Digital Literacy: Understanding the roles of various output devices.
  • Critical Thinking: Classifying printers and comparing their functions.
  • Collaboration: Engaging in group activities to compare different devices.

Learning Materials

  • Lagos State Scheme of Work
  • SS1 Information Technology textbooks
  • Online resources (embedded links)

Reference Books

  • Lagos State Unified Schemes of Work for Senior Secondary Schools
  • SS1 Information Technology textbooks

Instructional Materials

  • Examples of printers and monitors.
  • A projector to show the differences between impact and non-impact printers.
  • Presentation slides on output devices.

Content Outline

  1. Definition of Output Devices
    • Output Devices are hardware components that allow a computer to communicate the processed information to the user, either visually, audibly, or physically. Common examples of output devices include the monitor, printer, speakers, and projector.
    • For more on output devices, visit Computer Hope – Output Devices.
  2. Examples of Output Devices
    • Monitor: Displays visual information on a screen.
    • Printer: Transfers digital information onto paper.
    • Speakers: Produce sound based on digital audio signals.
    • Projector: Displays computer images or videos on a large screen or surface.
  3. Classification of Printers
    • Impact Printers: These printers use physical force to transfer ink onto paper. Examples include Dot Matrix Printers and Line Printers.
      • Dot Matrix Printers: Use a print head that moves back and forth, striking an ink ribbon to form text.
      • Line Printers: Print entire lines of text at once, often used for large volume printing.
    • Non-Impact Printers: These printers do not strike the paper and rely on other methods like heat or inkjet technology. Examples include Inkjet Printers and Laser Printers.
      • Inkjet Printers: Use liquid ink sprayed through nozzles to form characters on paper.
      • Laser Printers: Use a laser beam to form an image on a drum that is then transferred to paper.
    • To explore more on printer types, visit Techopedia – Printer Types.
  4. Comparison Between Impact and Non-Impact Printers
    • Impact Printers:
      • Produce text or images by physically striking paper.
      • Noisy during operation.
      • Commonly used for multi-part forms.
      • Examples: Dot matrix, line printers.
    • Non-Impact Printers:
      • Use laser or ink technology to print without striking paper.
      • Quieter operation.
      • Provide high-quality output.
      • Examples: Inkjet printers, laser printers.
  5. Difference Between Printer and Monitor
    • Printer: An output device that produces a hard copy of digital information on paper.
    • Monitor: An output device that displays digital information in real-time on a screen.

Objective Questions

  1. Which of the following is an example of an output device?
    a) Keyboard b) Monitor c) Scanner d) Microphone
  2. A monitor is used to _______.
    a) store data b) display visual output c) input data d) produce sound
  3. A dot matrix printer is an example of a(n) _______ printer.
    a) non-impact b) inkjet c) impact d) laser
  4. The laser printer is an example of a(n) _______ printer.
    a) non-impact b) inkjet c) dot matrix d) impact
  5. Which of the following printers uses ink sprayed onto the paper to print?
    a) Dot matrix b) Inkjet c) Line printer d) Laser
  6. Which output device is commonly used to produce sound?
    a) Monitor b) Speakers c) Printer d) Scanner
  7. A printer that uses a laser to print is known as a _______ printer.
    a) Dot matrix b) Inkjet c) Laser d) Line
  8. Impact printers are best known for _______.
    a) producing high-quality images b) being quiet during operation c) physically striking the paper d) printing without ink
  9. Which of these is NOT an example of an output device?
    a) Printer b) Monitor c) Keyboard d) Projector
  10. Which of the following is a non-impact printer?
    a) Dot matrix b) Line printer c) Inkjet d) Impact printer
  11. Non-impact printers are characterized by _______.
    a) physical contact with paper b) high noise levels c) quiet operation d) multi-part printing
  12. Which output device displays digital information on a screen?
    a) Printer b) Speaker c) Monitor d) Keyboard
  13. Which of the following printers is used for printing high-quality images?
    a) Dot matrix b) Inkjet c) Line printer d) Laser
  14. A laser printer works by _______.
    a) spraying ink b) heating the paper c) striking the paper d) using a laser to form images
  15. The purpose of an output device is to _______.
    a) input data b) store data c) process data d) display or produce data

Class Activity Discussion

  1. What is an output device?
    • Devices used to display or produce the results of processed data.
  2. List three examples of output devices.
    • Monitor, printer, speakers.
  3. What type of printer is known for using a heated drum to transfer toner onto paper?
    • Laser printer.
  4. How does an inkjet printer work?
    • It uses liquid ink sprayed onto paper to form characters and images.
  5. What is the main difference between impact and non-impact printers?
    • Impact printers physically strike the paper, while non-impact printers use heat or inkjet technology.
  6. Which of the following printers is quieter: dot matrix or laser?
    • Laser printer.
  7. Explain the difference between a printer and a monitor.
    • A printer produces hard copies on paper, while a monitor displays information on a screen.
  8. What does a monitor do?
    • Displays real-time information or images to the user.
  9. Why is a dot matrix printer considered an impact printer?
    • It uses a print head that physically strikes the paper to form text.
  10. Why would you use a non-impact printer over an impact printer?
    • Non-impact printers are quieter, produce higher-quality output, and are more suitable for detailed printing.
  11. What is the function of the speaker as an output device?
    • It produces sound based on digital audio signals.
  12. Can you name an output device used for displaying images on large surfaces?
    • Projector.
  13. Which output device is best for producing hard copies of digital files?
    • Printer.
  14. Explain how a laser printer works.
    • It uses a laser to form an image on a drum, which is then transferred to paper.
  15. What makes a monitor different from a printer?
    • A monitor displays information in real-time on a screen, while a printer produces hard copies on paper.

Evaluation Questions

  1. Which device is used to display information on a screen?
    a) Printer b) Monitor c) Keyboard d) Scanner
  2. A printer that transfers toner onto paper is called a _______ printer.
    a) Dot matrix b) Laser c) Inkjet d) Line
  3. Which of these is an example of a non-impact printer?
    a) Dot matrix b) Inkjet c) Line printer d) Laser
  4. A monitor is used to _______.
    a) print documents b) display images c) store data d) input data
  5. What is the function of an impact printer?
    a) It transfers ink onto paper by striking. b) It uses laser to print. c) It produces images using ink. d) It uses inkjets for printing.
  6. Which output device produces audio?
    a) Speaker b) Printer c) Monitor d) Scanner
  7. A dot matrix printer is an example of a(n) _______ printer.
    a) Inkjet b) Laser c) Impact d) Non-impact
  8. A laser printer works by using a _______ to form images on paper.
    a) Laser beam b) Inkjet nozzle c) Heat transfer d) Print head
  9. Which of these devices does not classify as an output device?
    a) Monitor b) Printer c) Keyboard d) Projector
  10. Why are non-impact printers quieter than impact printers?
    a) They use inkjet technology. b) They don’t physically strike the paper. c) They use toner only. d) They work on lasers.

Conclusion

  • Review the key points: Output devices, the classification of printers, and the differences between printers and monitors.
  • Discuss the uses of output devices in everyday life.

 

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